Which engine type is better for the Audi A4?

I am trying to decide between a diesel and a gasoline engine for my new Audi A4. I want something that is both efficient and powerful. Can someone help me weigh the pros and cons of each option?

In terms of fuel efficiency, the diesel engine is definitely the winner. It can give you up to 15% more miles per gallon compared to a gasoline engine. However, if you prioritize power, then the gasoline engine may be a better choice.